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US Study Finds that Mask Mandates Did Not Reduce Cases

A study by Steven G. Schauer et al titled “Analysis of the Effects of COVID-19 Mask Mandates on Hospital Resource Consumption and Mortality at the County Level” has revealed that mask mandates did not reduce cases at Bexar County, Texas.


Simply put, it defined before mask mandate period as 2 June 2020 to 2 July 2020 and after as 8 or 10 July 2020 to 12 August 2020, depending on the variable.


The below is the comparison per-100,000 population basis with the 95% CI in brackets.

  • New cases: before 16.1 (11.2–21.0); after 38.3 (22.4–54.3)

  • Hospital bed occupancy: before 18.8 (13.0–24.7); after 50.5 (47.2–53.7)

  • ICU bed occupancy: before 6.1 (4.4–7.8); after 19.2 (18.4–20.1)

  • Ventilator occupancy: before 3.1 (2.2–4.1); after 13.0 (12.5–13.5)

  • New deaths: before 0.06 (0.03–0.09); after 0.58 (0.37–0.78)


There are limitations to the study. For example, no patient data was used so no analysis was performed on those with comorbidities and how mask-wearing may impact such sub-groups.

 

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